发一篇sci一区二区有多难? - 知乎 JOURNAL OF THE EUROPEAN CERAMIC SOCIETY MATERIALS SCIENCE ENGINEERING R-REPORTS TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA PROGRESS IN MATERIALS SCIENCE Journal of Magnesium and Alloys 4)、经济学方面一区top期刊 JOURNAL OF INTERNATIONAL ECONOMICS EUROPEAN URBAN AND REGIONAL STUDIES Review of International Organizations